Heap-based buffer overflow in WebAccess HMI Designer - CVE-2020-16207
Published: August 7, 2020 / Updated: August 11, 2020
Vulnerability identifier: #VU34103
CSH Severity: High
CVSS v4: 8.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2020-16207
CWE-ID: CWE-122
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to a boundary error when processing PM3 files. A remote attacker can trick a victim to open a specially crafted project file, trigger heap-based buffer overflow and execute arbitrary code on the target system.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
Affected software
WebAccess HMI Designer
How to mitigate CVE-2020-16207
Install updates from vendor's website.
WebAccess HMI Designer - update to 2.1.9.81
External References
- https://us-cert.cisa.gov/ics/advisories/icsa-20-219-02
- https://www.zerodayinitiative.com/advisories/ZDI-20-950/
- https://www.zerodayinitiative.com/advisories/ZDI-20-951/
- https://www.zerodayinitiative.com/advisories/ZDI-20-955/
- https://www.zerodayinitiative.com/advisories/ZDI-20-958/
- https://www.zerodayinitiative.com/advisories/ZDI-20-959/